noun
urticating hair; poisonous bristle
Technical term in botany and zoology for specialized hairs or bristles that deliver irritants or toxins upon contact, found on certain caterpillars, plants, or spiders.
毒針毛に触れると、激しいかゆみを引き起こすことがある。
Touching urticating hairs can cause intense itching.
The urticating hairs of this caterpillar easily penetrate the skin.